In borehole geophysics, a tube wave is an interface wave traveling along the steel-cased borehole at a relatively fixed velocity, about 1430 m/s, as reported by Gal'Perin (1974). Tube wave …

The tube wave travels down the wellbore along the interface between the fluid in the wellbore and the wall of the wellbore. A tube wave suffers little energy loss and typically retains a very high …

A simple asymptotic analysis, based on the smallness of the ratio of the borehole radius to the wavelength, reveals the interaction between tube waves and seismic waves. The pressure …

2019年2月14日 · Several types of tube waves exist (Sheriff and Geldart, 1995, Section 2.5.5). The classical type consists of a P-wave traveling in a fluid within a tubular cavity (such as a …

Tube waves in producing oil and gas wells are useful for locating fluid interfaces, estimating bottom-hole pres-sures (Rowlan et al., 2003), investigation of properties of fluids inside the …

1993年11月1日 · The source first generates a tube wave, which is an acoustic wave in the fluid filling the borehole, and the pressure field of the tube wave, by distorting the borehole wall, in …

1993年11月1日 · The pressure field in a tube wave acts as a secondary source of seismic waves and conversely an incoming seismic wave excites a tube wave. The asymptotic analysis leads …

…surface of a borehole (tube waves). Under certain circumstances (e.g., oblique incidence on an interface), waves can change from one mode to another.

This video explains the structure and function of traveling wave tubes (TWT). It showcases various slow-wave structures and provides technical data for selec...

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